12312223013 has 2 divisors, whose sum is σ = 12312223014. Its totient is φ = 12312223012.

The previous prime is 12312223009. The next prime is 12312223019. The reversal of 12312223013 is 31032221321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8887398529 + 3424824484 = 94273^2 + 58522^2 .

It is an emirp because it is prime and its reverse (31032221321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12312223013 - 2² = 12312223009 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12312223019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6156111506 + 6156111507.

It is an arithmetic number, because the mean of its divisors is an integer number (6156111507).

Almost surely, 2^12312223013 is an apocalyptic number.

It is an amenable number.

12312223013 is a deficient number, since it is larger than the sum of its proper divisors (1).

12312223013 is an equidigital number, since it uses as much as digits as its factorization.

12312223013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12312223013 its reverse (31032221321), we get a palindrome (43344444334).

The spelling of 12312223013 in words is "twelve billion, three hundred twelve million, two hundred twenty-three thousand, thirteen".